查询词典 satellites

Besides, the computational method of the Uranus and its satellites is an important part of this dissertation.

与观测资料的归算有关的天王星和卫星的位置历算也是本论文的一个重要的组成部分。

The main work and achievements are summarized as follows:From the point of view of the formation satellites system energy, the vectorial form of the generalized relative dynamic equations is derived by the Lagrange method.

本文的主要研究内容如下：从编队卫星的相对能量角度出发，基于拉格朗日方法给出了一般情况下编队卫星相对动力学方程的矢量表达式。

In this model, a parameterized method has been employed to decrease or eliminate vertical deflection and vertical refraction errors.4 For the long baselines of Crustal Movement Observation Network of China, using the GPS satellites orbits and stations positioning analysis software GAMIT opened up by MIT to do the single day GPS observation data processing, a synthetic solution model, which is called "the synthetic solution model of baseline vectors", has been built up with several single day baseline vectors calculated by the GAMIT software, to compute the three dimension movement velocities of sites.

对于长基线的GPS地壳变形监测网，采用MIT开发研制的精密GPS定轨定位软件GAMIT进行单天GPS观测数据的处理，提出了利用多期单天的GAMIT解算出的基线向量进行综合解算的模型："基线向量综合解算模型"，用以计算地壳监测站点的漂移速度，并通过实例验证了该计算模型的正确性和可靠性。

Warm Start - The GPS receiver remembers its last calculated position, almanac used, and knows the UTC Time, but not which satellites were in view.

暖启动--GPS**器保存有最后计算的卫星的位置、历书和UTC时间，但保存的内容不是当前可视卫星的数据。

Weather satellites send information and photos of weather conditions to weather station on the earth.

气象卫星给地球上的气象台传送天气情况的信息和图象。

Several satellites observations demonstrated that the general intensity of lunar magnetism is 1~10 nT(1 nT=10-9T), the largest concentration of strong fields over 100 nT and strong crustal magnetism fields are located in the antipodal region of large impact basins.

中国科学院地球化学研究所，贵阳 550002；2。中国科学院国家天文台，北京100012；3。中国科学院研究生院，北京100039摘要：月球的磁场强度一般在1~10 nT（1 nT=10-9T）的范围内，最大磁场强度超过100 nT，强磁场区一般位于大的撞击盆地的对峙区域。

Those satellites travel at 3.07 kilometres a second (1.9 miles), at up to 35,880 kilometres above earth -- and the Apophis asteroid will pass by earth at a distance of 32,500 kilometres.

如果这颗小行星于2029年撞上一颗卫星，它的运行轨道就会改变，那么它很可能将在2036年下一次靠近地球时与地球相撞。

Those satellites travel at 3.07 kilometres a second (1.9 miles), at up to 35,880 kilometres above earth -- and the Apophis asteroid will pass by earth at a distance of 32,500 kilometres.

这些卫星位于地球上方3.588万公里，运行速度为每秒3.07公里，而阿波菲斯行星则预计将在距离地球3.25万公里的地方经过。

In the passive positioning of three geostationary satellites plus barometrical altimeter,the barometrical altimeter s horizontal dilution of precision and the pseudo-range s position dilution of precision are both defined,the formulas and distribution figures of such HDOP and PDOP are also given.

在三颗地球同步卫星加气压高度表的无源定位中，定义了气压高度表水平几何误差因子和伪距位置几何误差因子，并给出了相应的数学表达式和分布图。

Light fine attitude control is one of the key technologies of modern small satellites that adapt the characterist...

轻型高精度姿态控制是现代小卫星平台的一项关键技术。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐